exam Maths Puzzle Numerical Ability

what is the slope of the line connecting the two points (-7,5) and (2,-3)

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All I have is this (problem solving skills: Translate words into Math)
it has been 20 years for me

All I have is xeroxed copy of the page A person is biking and rode 30 miles in 2 hours with the wind and rode 12 miles in 3 hours against the wind. What is the rate of the wind speed? How would I set up the problem with 2 variables?